Jump to content
SAU Community

Recommended Posts

hey guys,

i was looking at buying a gt35 40 for my r33 and just wondering is ity going to have big lag ay i only have a fmic, xorst, airfilter and walbro pump, im planing to go biger injcectors computer but how will it run stock? i dont want it to have heaps of lag.

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/
Share on other sites

  • Replies 43
  • Created
  • Last Reply

Top Posters In This Topic

from what ive hurd on here you would be looking at about 4000 b4 boost

Consider the GT3540 .63? I'm sure SAU needs a guineepig. :laugh:

If you have a look at garretts turbine maps you will notice the GT35r .63 and the GT30r .82 have similiar flow/pressure values. I'm not completely sure and won't be for a long time but to myself the GT35r .63 I feel is a better option over the GT3040r .82 as the larger gt35r turbine wheel provides more shaft torque to drive the compressor.

I would be interested to see if any one has gone the gt35r .63 route over the gt3040r .82.

I'm a little scared of lag to be honest. I wouldn't go any bigger than a gt3071r on an rb25 but that also means reduced power output. :)

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2458472
Share on other sites

GT35 - .82 = boost (15-17psi) after 4500rpm or possibly even later than that,l its a 700hp turbo for gods sake.

Before that dont expect anything special and it will be quite lazy about town :)

DOnt get a GT35, get a GCG hi-flow or something similar if you want response

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2458778
Share on other sites

from what ive hurd on here you would be looking at about 4000 b4 boost

That is wright it doesnt come on til about 4000rpm i run one on my R33, ive been told you can put a smaller rear housing on it which would bring it down a bit. But for round town driving it pretty good you can still drive normally without ur BOV going off every time you go through the gears and when you want the power it comes on hard.

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2459352
Share on other sites

My .82 GT35R hits full boost (15psi) at 4600rpm.

FJ20ET stock, not mine (mine is FJ20E :P), full boost 18 psi at 4750rpm and 1 bar a 4500rpm. Mine same thing though 25 psi at 4750rpm. Running 0.82 housing.

Being a 6 with 2.5L, probs around the 4500rpm mark. Woohoo, turbos dont usually make good power till before this rpm anyways. Youll be surprised as to how nice it is. But yeah response wont compare to GCG high flow. But get a 3540 :( I love it

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2459494
Share on other sites

Im running a GT35r with .63 a/r on my rebuilt Neo Rb25 and its not laggy at all. Mind you its has been rebuilt and hiflowed by GCG but yeh i am very impressed with the response and accelaration

The Gt35r turbine wheel is too large to fit in to any of the hitachi/garrett internal housings that I know of.

I would assume you are running external gate?

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2459820
Share on other sites

The Gt35r turbine wheel is too large to fit in to any of the hitachi/garrett internal housings that I know of.

I would assume you are running external gate?

Well u must be mistaken as it is definately a gt35r in garret housings. Everything was modded. It was originally a t4 (specs unknown) and i got it rebuilt by gcg with ball bearing and hi flowed with .63 a/r. Spools up real quick

Yes running turbosmart ext wastegate and turbosmart supersonic bov (sleeper series) with an ebc on the way once it gets full tune

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2460088
Share on other sites

not taking the piss out of anyone, but i think the word 'hi-flow' really is being used quite a lot these days, sometimes for the wrong reason.

xxx_25L,

if you don't want too much lag, you can go with a GCG 'hi-flowed' turbo which will make things easier while fitting.

another option is a Garrett GT3071R with an A/R .82 exhaust housing which would be reponsive enough given the smaller compressor wheel, and plenty of flow given the A/R .82 exhaust housing.

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2460140
Share on other sites

Well u must be mistaken as it is definately a gt35r in garret housings. Everything was modded. It was originally a t4 (specs unknown) and i got it rebuilt by gcg with ball bearing and hi flowed with .63 a/r. Spools up real quick

Yes running turbosmart ext wastegate and turbosmart supersonic bov (sleeper series) with an ebc on the way once it gets full tune

So your definitely not running the usual RB style turbine housing.

It must be something along the lines of a VLT housing.

OR... have you miss-used the world 'highflow'? Highflow uses your origional turbine and comp covers.

As you are running an ext gate I think it would have been silly for GCG to machine up a T3 .63 when garrett sell a T3 .63. I think you will find it isn't a highflow but rather a good ol' genuine GT35r .63.

Got the receipt? Would be keen to see how they have worded this highflow which clearly isn't a highflow. :(

Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2460206
Share on other sites

So your definitely not running the usual RB style turbine housing.

It must be something along the lines of a VLT housing.

OR... have you miss-used the world 'highflow'? Highflow uses your origional turbine and comp covers.

As you are running an ext gate I think it would have been silly for GCG to machine up a T3 .63 when garrett sell a T3 .63. I think you will find it isn't a highflow but rather a good ol' genuine GT35r .63.

Got the receipt? Would be keen to see how they have worded this highflow which clearly isn't a highflow. :)

Ok to clear up...My original turbo WAS a T04 (specs unknown - roughly rated at 450hp ) I got gcg to convert it to a gt3540r using my original housings...you comprehend???

Below - quote by Michael Ramsay from an email.

"The GT3540R core swap is about a 6 hour job, where adaptors plates need to be welded and machined and tapped to the turbine housing, and some extensive machining and modification is required.

The GT35R Conversion - Rated between 600 & 650 using customers housings.

Kind Regards

Michael Ramsay

Internal Sales

GCG Turbochargers Australia Pty Ltd

Phone:+61 2 9708 2122

Fax:+61 2 9708 2912

www.gcg.com.au

Est 1979

Edited by FSTR32
Link to comment
https://www.sau.com.au/forums/topic/132659-gt35-40-big-lag/#findComment-2461975
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Did this end up working? Did you take some pictures?
    • And finally, the front lower mount. It was doubly weird. Firstly, the lower mount is held in with a bracket that has 3 bolts (it also acts as the steering lock stop), and then a nut on the shock lower mount itself. So, remove the 3x 14mm head bolts , then the 17mm nut that holds the shock in. From there, you can't actually remove the shock from the lower mount bolt (took me a while to work that out....) Sadly I don't have a pic of the other side, but the swaybar mounts to the same bolt that holds the shock in. You need to push that swaybar mount/bolt back so the shock can be pulled out past the lower control arm.  In this pic you can see the bolt partly pushed back, but it had to go further than that to release the shock. Once the shock is out, putting the new one in is "reverse of disassembly". Put the top of the shock through at least one hole and put a nut on loosely to hold it in place. Put the lower end in place and push the swaybar mount / shock bolt back in place, then loosely attach the other 2 top nuts. Bolt the bracket back in place with the 14mm head bolts and finally put the nut onto the lower bolt. Done....you have new suspension on your v37!
    • And now to the front.  No pics of the 3 nuts holding the front struts on, they are easy to spot. Undo 2 and leave the closest one on loosely. Underneath we have to deal with the wiring again, but this time its worse because the plug is behind the guard liner. You'll have to decide how much of the guard liner to remove, I undid the lower liner's top, inside and lower clips, but didn't pull it full off the guard. Same issue undoing the plug as at the rear, you need to firmly push the release clip from below while equally firmly gripping the plug body and pulling it out of  the socket. I used my fancy electrical disconnect pliers to get in there There is also one clip for the wiring, unlike at the rear I could not get behind it so just had to lever it up and out.....not in great condition to re-use in future.
    • Onto the rear lower shock mount. It's worth starting with a decent degrease to remove 10+ years of road grime, and perhaps also spray a penetrating oil on the shock lower nut. Don't forget to include the shock wiring and plug in the clean.... Deal with the wiring first; you need to release 2 clips where the wiring goes into the bracket (use long nose pliers behind the bracket to compress the clip so you can reuse it), and the rubber mount slides out, then release the plug.  I found it very hard to unplug, from underneath you can compress the tab with a screwdriver or similar, and gently but firmly pull the plug out of the socket (regular pliers may help but don't put too much pressure on the plastic. The lower mount is straightforward, 17mm nut and you can pull the shock out. As I wasn't putting a standard shock back in, I gave the car side wiring socket a generous gob of dialectric grease to keep crap out in the future. Putting the new shock in is straightforward, feed it into at least 1 of the bolt holes at the top and reach around to put a nut on it to hold it up. Then put on the other 2 top nuts loosely and put the shock onto the lower mounting bolt (you may need to lift the hub a little if the new shock is shorter). Tighten the lower nut and 3 upper nuts and you are done. In my case the BC Racing shocks came assembled for the fronts, but the rears needed to re-use the factory strut tops. For that you need spring compressors to take the pressure off the top nut (they are compressed enough when the spring can move between the top and bottom spring seats. Then a 17mm ring spanner to undo the nut while using an 8mm open spanner to stop the shaft turning (or, if you are really lucky you might get it off with a rattle gun).
    • You will now be able to lift the parcel shelf trim enough to get to the shock cover bolts; if you need to full remove the parcel shelf trim for some reason you also remove the escutcheons around the rear seat release and you will have to unplug the high stop light wiring from the boot. Next up is removal of the bracket; 6 nuts and a bolt Good news, you've finally got to the strut top! Remove the dust cover and the 3 shock mount nuts (perhaps leave 1 on lightly for now....) Same on the other side, but easier now you've done it all before
×
×
  • Create New...